Comes in packs of 4 basepads with spare locking plates and free shipping. These are 3D printed in carbon fiber and give you an additional 4 rounds per magazine with the stock magazine spring. I have tested these rigorously over the past month with full magazine drop tests and even throwing them across the room. I have ran them through USPSA matches and drills and they hold up to the tests. Designed for the M&P9 2.0, I have not tried these for the .40 cal and above. They will fit the standard M&P 2.0 as well as the newer Carry Comp models. They will fit the Compact 15rd models after some breaking in.
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